Ultrasonic denture cleaner



FIG. 1 is a perspective view of a ultrasonic denture cleaner;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the ultrasonic denture cleaner that form no part of the claimed design. 

CLAIM We claim the ornamental design for an ultrasonic denture cleaner, as shown and described. 